机构：[1]Laboratory of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, Guangdong Province, China.[2]the First Clinical Medical College, Southern Medical University, Guangzhou 510000, Guangdong Province, China.[3]Department of Gastrointestinal Surgery. The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510000, Guangdong Province, China.[4]TCM-Integrated Hospital, Southern Medical University, Guangzhou 510000, Guangdong Province, China.
To investigate whether Dihydromyricetin (DHM) inhibits cell proliferation and promotes apoptosis by downregulating Notch1 expression.
The correlation between Notch1 and Hes1 (a Notch1 target molecule) expression in hepatoma samples was confirmed by qRT-PCR. In addition, MTT assays, flow cytometry and TUNEL analysis showed that DHM possessed strong anti-tumor properties, evidenced not only by reduced cell proliferation but also by enhanced apoptosis in QGY7701 and HepG2 hepatocellular carcinoma (HCC) cells. The expressions of Notch1, Hes1, Bcl-2 and Bax were determined by Western blot.
Among the tested samples (n = 64), the expression levels of Notch1 (75% of patients) and Hes1 (79.7% of patients) mRNA in tumor tissues were higher than in the normal liver tissues. There was a negative correlation between the expression of Notch1 and the degree of differentiation and positively correlated with the Alpha Fetal Protein concentration. The viability of HCC cells treated with DHM was significantly inhibited in a dose and time-dependent manner. Apoptosis was induced in HepG2 and QGY7701 cell lines following 24 h of DHM treatment. After treatment with DHM, the protein expression of Notch1 was downregulated, the apoptosis-related protein Bax was upregulated and Bcl2 was downregulated. Notch1 siRNA further enhanced the anti-tumor properties of DHM.
Notch1 is involved in the development of HCC and DHM inhibits cell proliferation and promotes apoptosis by down-regulating the expression of Notch1.
基金：
The National Natural Science Foundation of
China, No. 81041099; and Natural Science Foundation of
Guangdong Province, China, No. S2011010003750.
第一作者机构：[1]Laboratory of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, Guangdong Province, China.
共同第一作者：
通讯作者：
通讯机构：[1]Laboratory of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, Guangdong Province, China.[*1]Laboratory of Hepatobiliary Surgery, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, Guangdong Province, China.
推荐引用方式(GB/T 7714)：
Lu Cai-Jie,He Yi-Feng,Yuan Wei-Zhuang,et al.Dihydromyricetin-mediated inhibition of the Notch1 pathway induces apoptosis in QGY7701 and HepG2 hepatoma cells.[J].WORLD JOURNAL OF GASTROENTEROLOGY.2017,23(34):6242-6251.doi:10.3748/wjg.v23.i34.6242.
APA：
Lu Cai-Jie,He Yi-Feng,Yuan Wei-Zhuang,Xiang Li-Jun,Zhang Jian...&Li Ming-Yi.(2017).Dihydromyricetin-mediated inhibition of the Notch1 pathway induces apoptosis in QGY7701 and HepG2 hepatoma cells..WORLD JOURNAL OF GASTROENTEROLOGY,23,(34)
MLA：
Lu Cai-Jie,et al."Dihydromyricetin-mediated inhibition of the Notch1 pathway induces apoptosis in QGY7701 and HepG2 hepatoma cells.".WORLD JOURNAL OF GASTROENTEROLOGY 23..34(2017):6242-6251
